Contributed by: Don Winner(AP) PANAMA CITY, Panama ó Argentinaís Miguel Carballo won the Nationwide Tourís season-opening Panama Championship, closing with a 5-under 65 on Sunday for a two-stroke victory over three players. The 27-year-old Carballo, five strokes back at the start of the round, finished with a 6-under 274 total on the Panama Golf Club course. He earned $99,000 and secured full status on the Nationwide Tour through the end of next season. "I still canít believe I won," Carballo said. "I didnít think I would ever win, but Iím happy that I did. To win any Nationwide Tour tournament would be a thrill, but to do it in Latin America makes it even more special. "Earning a Nationwide Tour card and having the opportunity to fulfill a goal of mine to play on the PGA Tour is beyond words." PGA Tour winner Jim McGovern (66), Hunter Haas (70) and Patrick Sheehan (71) tied for second at 4 under, and Camilo Benedetti (65) and third-round leader Marc Turnesa (73) followed at 3 under. Carballo won 55 years after Argentine star Roberto De Vicenzo claimed the first of his five victories at the Panama Golf Club. "Just winning is great," Carballo said. "But winning in the same place where one of the best golfers from Argentina and the world won is a great thrill." Carballoís only other professional win came in the 2006 Guatemalan Open, an event sanctioned by the PGA European Challenge Tour and the Tour de Las Americas. "My goal at the beginning of the day was to shoot 4 or 5 under, and I was able to do that," Carballo said. "I played so well today under tough conditions and a lot of pressure. ... This course was really hard all week long. You just had to do your best to hit fairways and greens. I guess I did that better than anyone else this week."